types: fix escape sequence encoding of high byte values in JSON strings

Treat the char value as unsigned when testing its value to yield consistent
results on both platforms with signed chars and those with unsigned chars
by default (e.g. ARM ones). This also avoids encoding byte values > 127 as
\uXXXX escape sequences, potentially breaking the strng contents.

Fixes: #62
Signed-off-by: Jo-Philipp Wich <jo@mein.io>

0 files changed, 0 insertions, 0 deletions